雲端 Push Notifications 即時推播訊息

GCM應用程序是基於谷歌雲端通訊平台,通知用戶當前的更新或產品促銷,非常迅速替代傳統簡訊/短信服務的使用數據服務（GPRS/3G/CDMA/WIFI）。
因此，它提供具有成本效益的解決方案，讓您的客戶或用戶被通知幾乎是免費的。

如有查詢，email : cmyes2013@gmail.com

Google 雲端通訊 (Google Cloud Message, GCM)
是由 Google 提供一項免費的服務，開發人員可透過該服務將伺服器中
的資料傳送給 Android 應用程式使用。可傳遞 4KB 的輕量資料訊息。[26]

GCM 的優缺點:

GCM 的優點是
由 Google 提供的免費服務，簡單就可傳送訊息，無須佈署伺
服器就可使用。

缺點是：
 只可使用 Android 作業系統的 App 接收訊息。
 發送訊息的限制只可傳遞 4KB 大小的訊息。
 有節流的機制，一次發送訊息給太大量的 Android 裝置，訊息就會直接
被丟棄。 GCM application is based on the Google cloud communications platform, to inform the user of the current updates or product promotions, very rapidly replacing traditional SMS / text messaging services use data services (GPRS / 3G / CDMA / WIFI).
Thus, it provides a cost-effective solution to keep your customers or users to be notified is almost free.

For inquiries, email: cmyes2013@gmail.com

Google Cloud Communication (Google Cloud Message, GCM)
Is to provide a free service by Google, developers can pass through servers in the service
The information sent to Android application use. Transitive 4KB lightweight data message. [26]

GCM advantages and disadvantages:

GCM is advantage
Free service offered by Google, you can simply send a message without the deployment wait
SERVER can be used.

Disadvantages are:
 Use only receive messages App Android operating system.
 sent messages can be transmitted only 4KB size limit of messages.
 There throttling mechanism, once sent a message to a large number of Android devices too, the message will be directly
   Discarded.